How do I apt install herdr?

Add the deb.griffo.io APT repository and its GPG key, run sudo apt update, then sudo apt install herdr. It works the same on Debian and Ubuntu.

How do I apt install the latest herdr?

There is no separate command, once this repository is added, apt resolves herdr to the newest release it serves, rebuilt within hours of upstream. Use sudo apt update && sudo apt install --only-upgrade herdr to move an existing install up.

apt install herdr on Debian and Ubuntu, latest release

Q: Does apt-get install herdr work as well?

Yes. apt and apt-get read the same sources, so sudo apt-get install herdr is equivalent.

            ⚡ The short answer. On a stock system apt install herdr fails outright, herdr is not in the official Debian or Ubuntu archives at all. Add the deb.griffo.io
            repository below and sudo apt install herdr gives you the current
            release on Debian and Ubuntu alike, currently herdr 0.9.3
            (updated 2026-10-01).
        

📦 Add the repository, then apt install herdr

Step 1: Add repository & key

Run the commands

sudo install -d -m 0755 /etc/apt/keyrings
curl -fsSL https://deb.griffo.io/EA0F721D231FDD3A0A17B9AC7808B4DD62C41256.asc | sudo gpg --dearmor --yes -o /etc/apt/keyrings/deb.griffo.io.gpg
echo "deb [signed-by=/etc/apt/keyrings/deb.griffo.io.gpg] https://deb.griffo.io/apt $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/deb.griffo.io.list > /dev/null
sudo apt update

install -d -m 0755 /etc/apt/keyrings
curl -fsSL https://deb.griffo.io/EA0F721D231FDD3A0A17B9AC7808B4DD62C41256.asc | gpg --dearmor --yes -o /etc/apt/keyrings/deb.griffo.io.gpg
echo "deb [signed-by=/etc/apt/keyrings/deb.griffo.io.gpg] https://deb.griffo.io/apt $(lsb_release -sc) main" | tee /etc/apt/sources.list.d/deb.griffo.io.list > /dev/null
apt update

sudo apt install extrepo
sudo extrepo enable griffo
sudo apt update

🆓 There is an always-free mirror. deb-free.griffo.io serves packages free forever, no account, no subscription, at most 2 months behind upstream, security fixes immediately. It currently carries cliamp, Ghostty, lazydocker, Oh My Posh, Uncloud and Zed; herdr is not one of them, so the repository above is the only way to get it today, ask and it can be enrolled.

How the free mirror works →

🧩 About the extrepo option. extrepo is Debian's own tool for external repositories: it writes the sources file and installs the signing key for you, checking the key against signed metadata first. This repository is registered with it as griffo, and the always-free mirror as griffo-free, so on Debian (bookworm, trixie, forky and sid) the commands above are the whole setup.

extrepo sets up the sources file and the key only, so a subscription's credentials still go in /etc/apt/auth.conf.d/deb.griffo.io.conf. Ubuntu is not covered, because extrepo publishes metadata for Debian suites only: there, use the sudo or root commands.

Step 2: apt install herdr

sudo apt install -y herdr

apt install -y herdr

🔄 How to apt install the latest herdr

Once the repository is added there is no separate "install latest" command, apt already resolves to the newest version this repository serves, and that is rebuilt within hours of every upstream herdr release. To move an existing install up to the latest version:

sudo apt update && sudo apt install --only-upgrade herdr

apt update && apt install --only-upgrade herdr

Or upgrade everything on the machine at once with sudo apt update && sudo apt upgrade. To see which version you would get before installing, run apt policy herdr.

📋 herdr versions available right now

Debian

Debian release	Suite	herdr version
Debian 12 “Bookworm”	bookworm	0.9.3-1~bookworm
Debian 13 “Trixie”	trixie	0.9.3-1~trixie
Debian 14 “Forky”	forky	0.9.3-1~forky
Debian Sid	sid	0.9.3-1~sid

Ubuntu

Ubuntu release	Suite	herdr version
Ubuntu 22.04 LTS “Jammy Jellyfish”	jammy	0.9.3-1~jammy
Ubuntu 24.04 LTS “Noble Numbat”	noble	0.9.3-1~noble
Ubuntu 25.10 “Questing Quokka”	questing	0.9.3-1~questing
Ubuntu 26.04 LTS “Resolute”	resolute	0.9.3-1~resolute

❓ Common questions

Does `apt-get install herdr` work too?

Yes. apt and apt-get read the same sources, so sudo apt-get install herdr is equivalent. apt is the friendlier front-end; apt-get is the stable one to prefer inside scripts.

Why doesn't `apt install herdr` work out of the box?

herdr is not packaged in the official Debian or Ubuntu archives, so a stock system has nothing to install and apt install herdr fails with "Unable to locate package". Adding this repository gives apt a source that carries herdr and keeps it current.

Which Debian and Ubuntu releases are supported?

Every currently supported release listed in the table above. The $(lsb_release -sc) in the setup command picks the right suite for the machine you run it on, so the same three lines work everywhere.

Is this repository trustworthy?

It's an unofficial repository maintained by Dario Griffo. Packages are built automatically from official upstream herdr releases, the packaging is open source at dariogriffo/herdr-debian, and the whole archive is GPG-signed. Several upstream projects link to it from their official installation docs.